Type-writing and computing machine.



l5 SHEETS- SHEET1- G. J. BARRETT.

TYPE WRITING AND COMPUTiNG MACHINE.

APPLICATION FILED DEC. H, 19H). 1,227,236. A Patented May 22,1917.

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G. J. BARRETT.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. 14. 1910.

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G. J. BARRETT.

TYPE WRITING AND COMPUTING'MAGHINE.

APPUCATION FILED DEC. 14. 1910.

1,227,236. Patented May 22, 1917.

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G. l. BARRETT.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. 14, 1910. 1,227,236. Patented May 22, 1917.

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WITNESSES:

G. J. BARRETT.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED 050.14, I910.

1,227,236. Patented May 22,1917.

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1,227,236. Patented 1135 221917.

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l-IIS ATTORNEY WITNESSES:

G. J. BARRETT. TYPE WRITING AND COMPUTING MACHlNE- APPLICATION FILED DEC. I4, I9I0.

Patented May 22, 1917.

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G. J. BARRETT.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED 05c. 14, I910.

1,227,236. Patented May 22,1917.

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G. J. BARRETT.

TYPE WRITING AND COMPUTiNG MACHINE.

APPLICATION FILED DEC. 14. 1910- Patented May 22, 1917.

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G. J. BARRETT.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. 14, 1910.

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TYPE WRITING AND COMPUTING MACHINE.

1,227,236. APPLICATION FILED DEC. H, 1910. Patented May 22 I5 SHEETSSHEET H- Q .0 E v INVENTUR:

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TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. 141' 1910.

WITNESSES:

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TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. 14, I910.

Patented May 22 1917.

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TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. l4. i9l0.

1,227,286. Patented May 22,1917.

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w-hs ATTEIR EY -UNITED STATES PATENT OFFICE.

GLENN J. BARRETT, or GRAND RAPIDs, MICHIGAN, ASSIGNQR, BY MESNE ASSIGN- MENTS, TO REMINGTON TYPEWR-ITER COMPANY, or ILIoN, NEW YORK; aconrona- TION on NEW YORK.

TYPE-WRITING AND COMPUTING MACHINE.

. Specification of Letters Patent.

Patented May 22, 1917.

Applicationfiled December 14,1910. Serial No. 597,354.

To aZZ whom it vii/05y concern:

proved. combined computing and typcwrit ing machine, by means of which'numbers can be written in connection with any ordinary words after the ordinary fashion of typewriting and computations such as addi tion and subtraction can be automatically performed with the numbers written on the typewriter.

My invention includes numerous improvements both in the computing mechanism itself and in the connections between said computing mechanism and the typewriting mechanism; and many or all of the improvements in the computing mechanism may be applicable to computing machinesin which there is no connection with typewriters.

tiy invention consists in certain features of construction and combinations and arrangements of parts, all of which will be fully set forthherein and. particularly pointed out in the claims. In some respects the present invention is in the nature of an improvement on, or a development of, that set forth in my prior application, Serial No.

552,889, filed December 13, 1909; and said prior application contains claims that read on the construction shown and described in the present application.

In the accompanying drawings,

Figure 1. is a front to rear v rtical sectional view of a combined machine having my invention embodied therein, the section being somewhat irregular but being for the most part about central of the typewriter.

Fig. 2 is a front to rear vertical section of he but with some parts shown in Fig. omitted and looking in the opposite direcion from Fig. 1.

Fig. 3 is a top plan view, partly in section and with parts broken away and parts removed, showing some of the mechanism that lies beneath the typewriting machine, this mechanism consisting for the most part of various connections from the typewriting machine into'the computing machine.

Fig. 4 is a view similar to Fig. 3 but showing some of the parts which were omitted or sectioned away in said Fig. 3.

Fig. 5 is a rear elevation.

Fig. 6 is a top plan view of the forward partsof the combined typewriting and computing machine.

I to 6 inclusive are on a reduced scale and they show only so much of the typewriting mechanism as is necessary to an understanding of the present invention.

Fig. 7 is an enlarged isometric view of part of the connections from one'of the keys and showing also part of a certain universal bar.

Fig. 8 is a view still more enlarged of certain details in said key connections.

Fig. 9 is a view in side elevation of the connections from the typewriter carriage to the denominationselecting devices of the computer and of some of the key connecv tions, the parts being shown in the posi tions they occupy when the computer is disconnected by a certain key from the typewriting mechanism.

Fig. 10 is a top plan view of the computing mechanism with the top plate of the casing removed and with some parts in section, some broken away and some omitted.

Fig. 11 is a right-hand side elevation of the computing mechanism in section just inside the right-hand plate of the computer casing.

Fig. 12 is a left-hand side elevation of the same in section just inside the lefthand plate of the computer casing.

Fig. 13 is a right-hand side elevation of one complete set of denominational devices and some of the associated parts; that is to say, this view shows the diiferential devices, the indicator, the register wheel and various connections of one denomination besides some of the cooperating parts of the machine, the parts being shown in the position they occupy during the depression of a key to set up a digit in that denomination.

Fig. 14 is a similar view but showing some of the operating mechanism and showing the parts in the position they occupy at a certain point early in the forward stroke oi the opera ting handle.

l ig. 15 is a view somewhat similar to the parts of Fig. 1 1, but with the operating handle at the extreme end of its forward stroke.

Fig. 16 shows some of the same parts of the operating mechanism as Figs. 14 and 15 but with the operating handle on the return stroke and in position where the register frame is just about to be tripped off.

Fig. 17 shows the same parts an instant later with the register frame elevated to its normal position.

Fig. 18 is a vertical section through the computing mechanism designed to illustrate the correcting and resetting mechanism. The parts are shown in full lines with the resetting handle drawn forward to reset the register wheels to zero.

Fig. 19 is a left-hand side elevation of part of the computing mechanism and illustrating the operation of transferring.

Fig. 20 is a top plan view of part of the computing mechanism.

Fig. 21. is a detail side elevation showing a certain locking device.

Figs. 9 to 21 inclusive are drawn to natural size. In most of the views parts have been omitted.

I have here shown my computing machine in connection with a Smith Premier No. 10 typewriter, although by simply modifying the form of the connections said computing machine is capable of combination with other sorts of typewriters. The Smith Premier No. 10 typewriter is well known in the art and I have not deemed it necessary to illustrate all the parts of the machine in detail but have shown only enough to make plain the manner in which the computing mechanism is combined with it.

The main frame of the typewriter comprises a side plate 1 and a top plate 2. Standards 3 rising from said top plate support a stationary carriage rail 4: which is suitably grooved on its opposite edges to cooperate with anti-friction balls 5 which run in grooved bars or rails 6 constituting part of a carriage 7 having a platen 8 mounted thereon. Front strike type bars 10 are mounted on segments 11 and they carry types 12 which are adapted to strike at a common printing point on the front face of the platen 8. The type bars are operated through a chain of connections including radiating links 13 and radiating sub-levers 141-, the last pivoted on a sub-lever segment 15 and connected by links 16 with bell-crank key levers 17 to which are pivoted the lower ends of the stems 18 of printing keys 20. The key stems 18 pass through a keyboard plate 21 and the key levers 17 are supported by a suitable frame 22. The sub-levers 14: are provided with returning springs 23. The carriage 7 is fed toward the left by a spring drum which is not shown, and the motion of said carriage is controlled by an escapement which may be of any suitable construction. The escapemont actually em ployed in the machine shown in the drawing is substantially like that shown in the British patent to Alexaiuler '1. Brown, N o. 1810 of 1907. The type and key actions briefly described above are substantially the same as those set Forth more fully in the British patent to Fell, No. 15,029 of 1900.

The typewriting machine is preferably equipped with a denominational tabulator as the use of such a device greatly facilitates the writing of numbers in columns. This tabulator, so far as my invention is con cerned, may be of any suitable construction but the one shown in the drawings is substantially like that shown in the patent to Alexander T. Brown, No. 939,587, dated November 9th, 1909. A. column stop bar 24; is supported on arms 25 that extend downward from the rear part of the carriage, said column stop bar being forum on two of its opposite faces with slots iced a letter space distance apart for the insertion of column stops 26. The construction is such that one of these stops can be inserted in any desired pair of transverse slots so as to arrest the carriage at any desired letter space po sition. Cooperating with the column stops 26 is a series of denominational stops 27. the upper ends of which are guided in a comb plate 28 suitably secured to the top plate 2. At their lower ends the stop bars 27 are pivoted at 30 to a series of levers 31 which are pivoted at to a cross bar 33 in the base of the typewriter. Said levers 31 have forwardly extending arms to which are pivoted the lower ends of the stems 34 of a series of tabulator keys which keys are arranged in a row at the back 01"- the printing keyboard of the machine. There is one key 35 for each denomination and when that key is operated the correspond ing stop bar 27 is moved up into the path of the column stop 26 and is adapted to arrest the carriage in the corresponding denominational position. A universal bar 36 con trolled by a spring 3'? lies across the rear arms of the levers 31. and said universal bar operates a device for releasing the carriage from, its step-bvstop feed mechanism and allowing it to run free until it is arrested by the tabulator stops. All of this mechanism is more fully set forth in the Brown, Patent, No. 939,587, above referred to.

Most of the computing mechanism and its c nneetions are contained in a frame work or casing comprising two parts. one a broad, low base part 40 (Fig. 5) that lies beneath the typewriting machine or on which the typewriting machine is mounted, and a boX- like casing 4:1 (Figs. 5 and 6) which is mounted at the left-hand side of the typeif it stood directly on the desk.

writer. 4

.first order.

writing machine and is secured to the lefthand side of the base part 40 of the computer frame. The parts 40 and 41. are preferably made separately and are connected by means of brackets 12 project ing from the part 40 and to which the part 41 is secured by means of screws. The

box-like part 41 contains most of the computing mechanism and the part 10 contains most of the connections to said computing mechanism from the typewriting machine.

thus securing the two frames rigidly together but in such a way that they can readily be separated. In the machine as shown, the part 40 of the computing mechanism raises the typewriter about an inch and a half higher above the desk than it would be As best shown in Figs. 1 and'3,'the part 10 consists essentially of a rectangular frame having about the outline of the base of the type- As shown in the numeral keys in this particular typewriting machine are'arranged in two rows at the left'and righthand sides of the keyboard and my key con nections have been arranged accordingly. The connections from the five left-hand numeral keys are shown in Fig. 5 and those from the four right-hand numeral keys are shown in Fig. 1; and all of them are shown in plan in Fig. 4. These connections comprise a series of links 47, each having at its forward end a vertical section 48 which is pivoted to the depending arm of one of the bell cranks 17 of the numeral keys. The links 17 extend from the keys toward the rear of the machine and at their rear ends said links are each thickened as shown in Fig. a at 50. Said thickened rear ends are formed with horizontal slots 51 through which pass two posts 52, one projecting from each of the side plates 1 of the typewriter frame, said posts supporting and guiding the rear ends of the links 47 in such a way that when any numeral key is depressed the corresponding link 47 has its rear end 50 moved directly toward the front of the machine. Each of said links has at its rear end a depending lug 53 which normally stands'just back of the upper end of a lever 54 of the There are nine of these levers 54, one for each of the links 47, and said levers are mounted in two sets at the lefthand and right-hand sides of the frame-part 40, each set being pivoted on a rod 55 supported by arms 56 projecting from a rock shaft 57 which'is journaled at its ends in the two side plates of the frame 40. It will be understood that the links &7 are mounted on the typewriter and the levers 54 on the frame 40; and that the connection between said links and the levers is of such character as not to interfere with the lifting of the typewriter off of the frame. As far as the key; connections are concerned, the typewriter can be put on or off at any time and whenever it is in position on the frame 10 the key connections are ready for operation without any special attention. As will appear more fully hereinafter the shaft 57 normally stands in the position shown in Figs. 1 and 2 but it can be rocked to the position shown in Fig. 9 to depress the levers 54 out of the-paths of the lugs 53 so that the numeral keys are inoperative to rock the levers 54. The lower ends of the levers 54 have pivoted thereto links 58 which extend forward and at their forward ends are connected to arms 60 depending from horizontal transverse rock shafts 61 pivoted in the frame 40. Each of the shafts 61 has an upstanding arm 62 which is connected by a link 63 with a bell crank 64, pivoted at '65 on averossbar 66 of the frame 40. Each of the bell-cranks '64 has a link 67 pivoted thereto and extending outside of the casing 10 and into the casing 11 where it is connected to one of a series of stop slides 68 (Figs. 19 and 20). A horizontal frame bar 70 (Fig. 3) is mounted in the frame 40 and extends in a front and back direction and has two flanges 71 bent down therefrom on its right and left-hand edges and the shafts 61 are pivoted at their inner ends in these flanges, said shafts being pivoted at their outer ends in the side plates of the frame 40. Said shafts and the whole train of key connections from the levers 54: to the slides 68, are restored to normal position i by springs 72, each connected at one end to one of the arms 62 and at the other end to the cross bar 66. There are five rock shafts 61 on the left of the bar 70 and four on the right as shown in Fig. 3 and all of the five bell cranks 6-1 pertaining to the left-hand digits a re arranged one on top of another on the same pivot screw and the four bellcranks 64: pertaining to the other four digits are similarly disposed. The arrangement is such that the slide 68 nearest the front of the machine corresponds with the digit 1 and the succeeding slides correspond regularly to the other digits, the 9 slide being the rearmost one. As the slide 68 has a lim ited extent of movement and it is not desired to have the key positively arrested, I have provided in the chain of connections between the keys and slides, a series of yielding connections, said yielding connections being located in the present instance between the shafts 61 and the arms 62. These connections are illustrated in detail in Figs. 7 and 8. 73 represents a collar tight on the shaft 61 and having two lugs or projections 7-1 extending lengthwise of said shaft and abutting the hub 75 of the arm 62, said hub be ing loosely mounted on the shaft and being prevented from motion toward the right thereon by means of the projections 74. A pin 76 projects from the shaft into a cutout in the hub 75, said cut-out permitting a limited rotation of the shaft independently of the hub. The arm 62 is drawn forward as far as permitted by the pin 76 by means of a spring ,7 7 connected at one end to the arm 62 and at the other to a collar 78 around which said spring is wound and which is rigidly mounted on the rock shaft by means of a set screw 80. The construction is such that when the shaft begins to turn the arm 62 is drawn along with it by means of the spring 77 but when the slide 68 reaches the limit of its motion, the shaft can turn independently of the arm 62 against the tension of the spring 77, the pin 76 moving in its cut-out in the hub 75. This connection enables the motion of the slide 68 to be definitely limited and prevents any straining of the parts. In the present instance, the motion of the slides 68 is limited by the sideplate of the casing 41 (Fig.

The various links 58, 67, etc, are or may be provided with turnbuckles, as shown,

for the purpose of adjusting their length.

I prefer to mount a cover plate 81 over the parts at the front of the frame in order to protect them from dust; and another plate 82 is also mounted beneath said parts for similar purposes.

Two universal bars 83 are provided for the key operated parts, one of said universal bars being in position to be operated by the left-hand series of shafts 61 and the other by the righthand series of said shafts. Each of said universal bars extends horizontally above the shafts and is mounted at its forward end by means of a pivot screw 84 on a guide link 85 pivoted on a screw 86 threaded into the frame 40. At their rear ends the bars 83 are pivoted at 87 to arms 88 projecting upward from a rock shaft 90 on which said arms are rigidly mounted so that said shaft is rocked whenever any one of the nine numeral keys is operated. The universal bars are formed on their under sides with teeth or projections 91 with which cooperate arms 92 mounted on the several rock shafts 61, the construction being such that the universal bar is moved toward the front of the machine when a key is depressed. At its left-hand end the shaft 90 has an arm 93 projecting therefrom toward the rear of the machine, and a pin 94: (Fig. 5 2) projects from said arm into a slot in the end of an arm 95 which is rigidly mounted on a rock shaft 96 that extends into the easing 11 where it operates devices to be hereinafter described.

The denomination selecting devices of the computer are controlled by the typewriter carriage and preferably through the column stops 26. A bracket 97 (Figs. 1 and 5) is secured to a part of the typewriter framework by means of screws 98 in a position adjacent the denominational stop bars 27. A bell crank 100 is pivoted on said bracket at 101 and has an upstanding arm to which a dog 102 is pivoted at 103. These parts are shown in normal position by solid lines in Fig. 5 and at the extreme limit of their motion under the impulse of the carriage by dotted lines in said Fig. It will be seen that normally the dog 102 stands in the path of the column stops 26 and that, as the carriage moves toward the left of the operator, or toward the right as viewed in Fig. 5, the lever 100 will have its upstanding arm moved in the same direction. The dog 102 has an arm that is normally held against a lug 104 by means of a spring 105 connected to the lever 100 and to the dog so that when a column stop presses the dog toward the right in Fig. 5, said dog moves the lever. with it; but in bringing the typewriter carriage back to begin a new line the column stops cross this dog in the opposite direction and said dog is turned about its pivot 103 out of the way of the column stops. The lever 100 has an arm 106 which, for the purpose of adjustment, is made in two sections connected together by screws 107 that pass through slots in the section 106 and are threaded into the section 100, the slots being elongated in the direction of the length of the arm so that the length of said arm can be regulated by loosening the screws 107 and sliding the section 106 one way or the other. This adjustment adapts my computing mechanism to typewriters of different styles of type and correspondingly different extends of letterspace feed of their carriages. Typewriting machines are arranged for various spacings, eight, ten and twelve letters to the inch being examples of spacings more or less commonly used in this country. A link 108 is pivoted to the free end of the arm 106 and the lower end of said link is threaded adjustably into a sleeve or tube 110. This sleeve has a hole extending the entire length thereof andonly the upper part of said hole is threaded. A link or Wire 111 has its upper end in the hole in the sleeve 110 and at its lower end said wire is pivoted to an arm 112 projecting from a rock shaft 113 in the frame 40. The wire 111 is loose in the tube 110 and it is drawn upward into said tube by means of a spring 11 1 connected at its upper end to a plate 115 projecting from the tube 110 and at its lower end said spring is connected with a loop 116 in the wire 111. The upward motion of the wire 111, under the impulse of the spring 114, is adjust-ably limited by a collar 117 which surrounds said wire and is secured in position thereon by a set screw 11.8, this collar normally contacting with the lower end of the tube 110. The parts 108, 110 and 111 normally move together as a single link, but in case the denomination selecting mechanism is arrested in this motion from any cause, the link 108 can move upward independently of the wire 111, stretching the spring 114, so that the parts will not be strained if the carriage comes against the dog 102 at a time when the shaft 113 is for any reason not free to turn. As best shown in Figs. 2, 3 and 9, the shaft 113 extends across the frame and at its lefthand end has mounted thereon an arm 120 which coiiperates with a stationary pin 121 mounted on an arm 122 which is rigidly secured to a lug 123 projecting from the frame s 40 by means of a bolt or nut 124. The pin 121 constitutes a stop to limit the motion of the shaft 113 in one direction and said stop can be adjusted by loosening the nut 124 and turning the arm 122. The shaft 113 also has an upstanding arm 125 which is connected by means of a link 126 with an arm 127 secured to and projecting from a rock shaft 1.28 which extends into the casing 41 where it controls the denomination selecting devices as will presently be described. It will be seen that the shaft 128 is rocked whenever the lever 100 is rocked by the column stop 26.

The box-like casing or frame 41 com prises two end pieces 130 (Fig. 12) which are here shown as castings, a bottom plate 131, a top plate 132, a right-hand side plate 133 (Fig. 20) and a left-hand side plate 134, the front, bottom and side plates being secured to the end pieces 130 by screws 135.

There are a number of stationary cross rods and other stationary parts in this portion of the machine which will be more specifically referred to in their proper order. In the present instance the casing plates, especially the side plates 133 and 134, are also utilized frame plates to support the various parts of the mechanism.

The setting-up mechanism comprises certain devices which are pivoted on a stationary rod 136 (Figs. 10, 12 and 13). This rod, like some of the other stationary rods, has a hole 137 (Fig. 12) bored in each end of it and headed screws 138 passing through the side plates 133 and 134 are threaded into said holes and maintain the rod rigidly in place. Said rod is formed with a series of peripheral grooves as indicated in Fig. 13 and in each of said grooves two plates or levers 140 and 141 are pivoted side by .of the rod is flattened on its under side at 142 and each of the plates is formed with an opening or slot 143 of a width a little less than the diameter of the round reduce part of the rod. The construction is such that the plates can he slipped. over the rod when they are turned in such position that the slots fit on the flattened parts 142 of the rod; but when turned down into normal position the slots are not wide enough to permit of the plates being removed.

The shape of the plate 141 .is best shown in Fig. 12 where it will be seen. that said plate has adepending arm 1.44 to which is connected the forward end of a long coiled spring 145, the rear end of which is connected to a plate 146 secured at its ends by screws 147 to lugs 148 projecting from the side plates of the casing. The two plates 140 and 141 are connected together by means of a headed pin 150 projecting from the plate 141 through a slot 151 in the plate 142, said slot being so disposed as to permit of a limited amount of independent turning of the two plates about the rod 136. A spring 152 is connected at one end to a post 153 (Fig. 13) projecting from the plate 14 and at the other end said spring is connected to a post 154 projecting from the plate 141. The tension of this spring normally holds the pin 150 in the rear end of the slot 151. The relative motion of the two plates under the impulse of this spring, is limited by an car 155 of the plate 140 striking the pin 154. Another pin 156, projecting from the plate 141, lies in a short cut-out 157 in the plate 140. The independent motion of these two plates has to do with the carrying or transfor operation, as will appear hereinafter.

Each of the plates 140 has an arc-shaped part 153 in the periphery of which is formed a series of ten notches 160 with which a pawl 161 cooperates. t is this pawl engaging the rearmost one of the notches 160 as shown in Fig. 12, that normally holds the parts against the tension of the spring 145. When said pawl is withdrawn the plates 140 and 141 are free to move toward the rear of the machine under the impulse of the spring 145 until arrested by one of the slides 68 or by other means. The whole series of pawls 161 are all pivoted on a rod 162 secured in the lower forward edge of a plate 163 which at its ends is secured by screws 164 to lugs 165 projecting from the side plates 133 and 134. The plate 163 is suitably slotted to accommodate and guide the pawls 161. Each of said pawls has an upstanding arm 166 which is oil-set to one side in order to avoid interfering with the part 158 and to which is connected a controlling spring 167, all of said springs being connected at their rear ends to a flange 168 bent up from the plate 163. 

